Before modern medical lab techniques became available, doctors diagnosed some diseases by smelling a patient's breath. Scientists have been working for years to develop analytical instruments that can ...

Radishes are a common root vegetable available in many different sizes, shapes, and colors. In fact, there are numerous varieties of radishes, each of which offers a unique set of nutrients and ...

The history of life stretches back untold eons. Today, there is a staggering array of organisms on Earth, with more species being discovered every year. The complexity of life, from the smallest ...